diff --git a/CMakeLists.txt b/CMakeLists.txt
index 16415f3..f0d2ec1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -85,6 +85,9 @@ target_link_libraries(test_yolo3_coco4 tkDNN)
 add_executable(test_yolo3 tests/yolo3/yolo3.cpp)
 target_link_libraries(test_yolo3 tkDNN)
 
+add_executable(test_yolo3_512 tests/yolo3_512/yolo3_512.cpp)
+target_link_libraries(test_yolo3_512 tkDNN)
+
 add_executable(test_yolo3_tiny tests/yolo3_tiny/yolo3_tiny.cpp)
 target_link_libraries(test_yolo3_tiny tkDNN)
 
diff --git a/tests/yolo3_512/yolo3_512.cpp b/tests/yolo3_512/yolo3_512.cpp
new file mode 100644
index 0000000..1050990
--- /dev/null
+++ b/tests/yolo3_512/yolo3_512.cpp
@@ -0,0 +1,95 @@
+#include<iostream>
+#include<vector>
+#include "tkdnn.h"
+
+int main() {
+
+    // Network layout
+    tk::dnn::dataDim_t dim(1, 3, 512, 512, 1);
+    tk::dnn::Network net(dim);
+
+    // create yolo3 model
+    std::string bin_path  = "../tests/yolo3_512";
+    downloadWeightsifDoNotExist("../tests/yolo3_512/layers/input.bin", bin_path, "https://cloud.hipert.unimore.it/s/39XbxMxaX7zwFKQ/download");
+    int classes = 80;
+    tk::dnn::Yolo *yolo [3];
+    #include "models/Yolo3.h"
+
+    
+
+    // fill classes names
+    for(int i=0; i<3; i++) {
+        yolo[i]->classesNames = {"person" , "bicycle" , "car" , "motorbike" , "aeroplane" , "bus" , "train" , "truck" , "boat" , "traffic light" , "fire hydrant" , "stop sign" , "parking meter" , "bench" , "bird" , "cat" , "dog" , "horse" , "sheep" , "cow" , "elephant" , "bear" , "zebra" , "giraffe" , "backpack" , "umbrella" , "handbag" , "tie" , "suitcase" , "frisbee" , "skis" , "snowboard" , "sports ball" , "kite" , "baseball bat" , "baseball glove" , "skateboard" , "surfboard" , "tennis racket" , "bottle" , "wine glass" , "cup" , "fork" , "knife" , "spoon" , "bowl" , "banana" , "apple" , "sandwich" , "orange" , "broccoli" , "carrot" , "hot dog" , "pizza" , "donut" , "cake" , "chair" , "sofa" , "pottedplant" , "bed" , "diningtable" , "toilet" , "tvmonitor" , "laptop" , "mouse" , "remote" , "keyboard" , "cell phone" , "microwave" , "oven" , "toaster" , "sink" , "refrigerator" , "book" , "clock" , "vase" , "scissors" , "teddy bear" , "hair drier" , "toothbrush"};
+    }
+
+    // Load input
+    dnnType *data;
+    dnnType *input_h;
+    readBinaryFile(input_bin, dim.tot(), &input_h, &data);
+    
+    //print network model
+    net.print();
+
+    //convert network to tensorRT
+    tk::dnn::NetworkRT netRT(&net, "yolo3_512.rt");
+
+    // the network have 3 outputs
+    tk::dnn::dataDim_t out_dim[3];
+    for(int i=0; i<3; i++) out_dim[i] = yolo[i]->output_dim; 
+    dnnType *cudnn_out[3], *rt_out[3]; 
+
+    tk::dnn::dataDim_t dim1 = dim; //input dim
+    printCenteredTitle(" CUDNN inference ", '=', 30); {
+        dim1.print();
+        TIMER_START
+        net.infer(dim1, data);    
+        TIMER_STOP
+        dim1.print();   
+    }
+    for(int i=0; i<3; i++) cudnn_out[i] = yolo[i]->dstData;
+    
+    printCenteredTitle(" compute detections ", '=', 30);
+    TIMER_START
+    int ndets = 0;
+    tk::dnn::Yolo::detection *dets = tk::dnn::Yolo::allocateDetections(tk::dnn::Yolo::MAX_DETECTIONS, classes);
+    for(int i=0; i<3; i++) yolo[i]->computeDetections(dets, ndets, net.input_dim.w, net.input_dim.h, 0.5);
+    tk::dnn::Yolo::mergeDetections(dets, ndets, classes);
+
+    for(int j=0; j<ndets; j++) {
+        tk::dnn::Yolo::box b = dets[j].bbox;
+        int x0   = (b.x-b.w/2.);
+        int x1   = (b.x+b.w/2.);
+        int y0   = (b.y-b.h/2.);
+        int y1   = (b.y+b.h/2.);
+
+        int cl = 0;
+        for(int c = 0; c < classes; ++c){
+            float prob = dets[j].prob[c];
+            if(prob > 0)
+                cl = c;
+        }
+        std::cout<<cl<<": "<<x0<<" "<<y0<<" "<<x1<<" "<<y1<<"\n";
+    }
+    TIMER_STOP
+    
+    tk::dnn::dataDim_t dim2 = dim;
+    printCenteredTitle(" TENSORRT inference ", '=', 30); {
+        dim2.print();
+        TIMER_START
+        netRT.infer(dim2, data);
+        TIMER_STOP
+        dim2.print();
+    }
+    for(int i=0; i<3; i++) rt_out[i] = (dnnType*)netRT.buffersRT[i+1];
+
+    for(int i=0; i<3; i++) {
+        printCenteredTitle((std::string(" YOLO ") + std::to_string(i) + " CHECK RESULTS ").c_str(), '=', 30);
+        dnnType *out, *out_h;
+        int odim = out_dim[i].tot();
+        readBinaryFile(output_bins[i], odim, &out_h, &out);
+        std::cout<<"CUDNN vs correct"; checkResult(odim, cudnn_out[i], out);
+        std::cout<<"TRT   vs correct"; checkResult(odim, rt_out[i], out);
+        std::cout<<"CUDNN vs TRT    "; checkResult(odim, cudnn_out[i], rt_out[i]);
+    }
+    return 0;
+}